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Riot police today arrested 12 people and seized a rifle amid
continuing violence sparked by the deaths of two teenagers in a
stolen car.

Rioters threw bottles, fireworks and stones at a line of police
during a fourth night of unrest in the troubled suburb of Macquarie
Fields, in Sydney's south-west.

The arrests came after dozens of heavily armed police in riot
gear stormed a house, armed with a search and arrest warrant.

Police arrested three males and two females and seized a rifle
during the search, a spokesman said.

One of the females was expected to be charged with concealing a
serious indictable offence.

Earlier, police arrested five men and a male youth for rioting,
hindering police and offensive behaviour, while a 15-year-old girl
was arrested for assaulting police.

The violence was sparked by the deaths of teenagers Dyllan
Raywood, 17, and Matthew Robertson, 19, during a police pursuit in
Macquarie Fields.

The pair were killed when they hit a tree in a stolen car late
on Friday night.

The driver of the car, who is known to police, fled the scene
and has not been found.

About 8pm (AEDT) today, officers had completed a search of a
house on the corner of Cottonwood Crescent and Eucalyptus Drive,
about 200m from where the two teenagers died in the car crash.

A line of about 30 police in riot gear then advanced on a crowd
of about 100 people, forcing them 100m back up Eucalyptus
Drive.

As police advanced, rioters continued to throw projectiles.

The police then stopped and retreated to the corner of
Cottonwood Crescent and Eucalyptus Drive, putting a space of some
200m between them and the rioters.
There they formed a line again and the crowd kept their
distance.

But in a sudden move, the riot police jumped into two police
vans and drove off up the street, away from the rioters.

Police left the area as a helicopter hovered above, shining its
spotlight on the crowd.

About 45 minutes later, police vehicles began patrolling the
area as residents continued to mill about the streets.

On Sunday night, molotov cocktails and rocks were hurled at
police in the third night of rioting.

Four people were arrested and one officer suffered a broken hand
during the clashes.

The riots are Sydney's worst since the inner suburb of Redfern
became a hotspot following the death of 17-year-old Thomas "TJ"
Hickey last year.

The NSW government today vowed to crack down on rioters, with
Premier Bob Carr saying media footage would be used to identify
troublemakers.

"What will happen now ... is a process of identification using
tapes as happened in Redfern, with charges being pressed against
people who are seen to have had a hand in this riotous behaviour,"
Mr Carr told reporters today.

Police Minister Carl Scully said officers were prepared for more
violence and would make further arrests.

Flowers, cards and bottles of beer were left as tributes to the
two teenagers at the crash site, along with a banner which read:
"We know who the real criminals are, we just want justice".

Eucalyptus Drive also is dotted with graffiti threatening
police, including messages reading: "Police will die", "Cops kill
kids", and "We will kill you dogs".

NSW Police Commissioner Ken Moroney said the slogans were the
worst he had seen.

"I've been a police officer for 40 years and have never seen
these sorts of slogans written on walls at any time in this state,"
he told reporters.

Mr Moroney rejected residents' suggestions the police car
involved in the chase rammed the stolen car during the pursuit.

Redfern erupted in violence early last year following the death
of teenager TJ Hickey, who was impaled on a fence while riding his
bicycle in the area. Many locals blamed police for his death.

A coronial inquest later found police were not chasing TJ at the
time of his death and were not responsible for the accident.